Perhaps you should try some spelling variations:
21 english » 210 english, 1 english, 11 english
2 english » _ english, ii english
2f texts » ii texts, i texts, 1 texts
20 texts » ii texts, i texts, 1 texts
20 tests » 10 tests, 20 test, 20 teeth
2 texts » 2 text, 2 texte, i texts
_ texts » _ text

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: %22hymns%((21 english) OR (2 english)) %((((((2f texts) OR (2 texts))) OR (_ texts))) OR (((20 texts) OR (20 tests))))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22hymns%((21 english) or (2 english)) %((((((2f texts) or (2 texts))) or (_ texts))) or (((20 texts) OR (20 tests))))%22".
• Adding a wildcard symbol may retrieve word variants: %22hymns%((21 english) or (2 english)) %((((((2f texts) or (2 texts))) or (_ texts))) or (((20 texts) OR (20 tests))))%22*.